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A227661 as a simple table

n a(n)
0 1
1 1
2 128
3 896328
4 69221669104
5 31283451053916800
6 57403822541579269311072
7 337320253484345016223956919936
8 5366698074745901061777599023075846976
9 203989890816333447880297347963799273322740544
10 16812841813975825541536765059695075768059296587720768 

[1,1,128,896328,69221669104,31283451053916800,
 57403822541579269311072,
 337320253484345016223956919936,
 5366698074745901061777599023075846976,
 203989890816333447880297347963799273322740544,
 16812841813975825541536765059695075768059296587720\
 768]

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Last modified September 17 05:28 EDT 2024. Contains 375985 sequences. (Running on oeis4.)